Papeb-bag-makijmg machine



41. DUVALL. PAPER BAG MAK'I NG MACHINE.

APPLICATION FILED JULY 8. 1915.

1,325,466. Patented Dec. '16, 1919.

4 SH HEET lwmmses; 3r INI/ENTOR' M mm am BY 41444 9. M I

j A TTORNE Y J. DUVALL.

PAPER BAG MAKING MACHINE. APPLICATION FILED JULY a. 1915.

1,325,466; Patented Dec.16,-1919.

M N 4 SHEETS-SHEET 2. N

l l "Q WITNESSES: 1- INVENTOR Y W 9. I m E A TTOR/VEY l. DUVALL.

PAPER BAG MAKINGv MACHINE.

APPLICATION FILED JULY 8. 1915.

Patented Dec. 16, 1919.

4 SHEETS-SHEET 3- INVE/VTUR ATTORNEY J. DUVALL.

PAPER BAG MAKING MACHINE.

APPLICATION FILED JULY 8,1915- Patented Dec. 16,1919.

4 SHEETS-SHEET 4 INVENTOB W M ATTORNEY w/mmsm: W W

CAD

onrrnn srnnsrnr JAMES DUVALL, on crimes, WASHINGTON.

PAPER-BAG-MAKING IvLACI-IINE.

To all whom it may concern:

Be it known that 1, James DUVALL, a citizen of the United States, and a resident of amas, county of Clarke, State of ashington, have invented a new and usefullrm provement in Paper-Bag-Making Machines, of which the following is a specification.

My invention relates to paper bag-making. machines, and particularly to the tube-forming part. i

In the pie-existing machine, the devices lei-forming the steo of forming the continuous strip of paper into the tube from which the bag-is later made, have a tendency to tear the paper strip in said operation, andin so doing frequently necessitated the stopping of the machine, which causes a loss of time and diminishes the output of the machine.

The details of my invention are hereinafter described, with reference to'the ac companying drawings, in which:

Figure 1 is a side elevation of the lefthand portion of my machine commonly known as the former section; in broken lines is shown the course taken by the paper strip in its passage through this portion of the machine.

Fig. 2 a plan view of the parts shown in Fig. l.

i in. 3 is a vertical transverse section take approximately on the line iii-13 of Fig. 2. The broken lines of this figure show the naper tubing and partially fo med tacks therein.

Fig. l is a view similar to Fig. 3 taken on the line 1ll of Fig. 2.

Fig. 5 is a further similar section taken on the line 15-l5 of Fig. 2.

Fig. 5 is a vertical section taken approximately on the line 55" of Fig. 2.

Fig. 6 is a diagrammatic view showing the location and operation of the lip and slitter knives; Figs. 7 to 12 inclusive are details of construction.

In order to more readily describe my de vices, I shall make use of certain trade terms well known to anyone versed in the art of paper-bag making. The paper is delivered to the machine in sheet form, and my device operates to transform the plain sheet into a continuous tube provided with a longitudinal tuck in each side.

The section of the machine in which this transformation is accomplished will here after be referred to as the tformer section,

Specification of Letters Patent. Patented Dec. 16, 1919.

Application filed July 8, 1915.

Serial No. 38,766.

and the tucked paper tubing will be referred to as the tube. In this former section, is located the stamper which makes an imprint on the sheet at such intervals that eachfin ished bag will bear an individual stamp. The lip-knife and slitter knives are also located in. this section and perform their functions in a manner similar to that of the Stamper.

The former comprises two standards, a, (see Figs. 1 and mounted on the table Z) of the machine. At the top of the standards is rigidly supported a bearing box 0 (see Fig. 5), in the ends of which are inserted plugs (Z, in which is journaled the shaft 6. An opening is cut in the face of the box 0., The base of the box alias pend ent arms 9 and it connected by a web 2' at the top and the lowermost ends of the pendent arms and have integral flanges ;j to which the lower former plate 56 is attached.

The pendent arm 9 is made with a groove 7c,and the lowermost end of tiis arm is made with forwardly projecting tongue Z. At the lower end of the arm 71, is an inclined flange m to which the front folderplate n is attached. To the arm h is fastened. a bracket- 0, having a stud r on which is journaled, the female. die holder 39, see Figs. 5 and 6, to the curved base of which is fastened the female die 8 .(see Fig. 7); Said die is thin flat piece of metal, having in it an opening conformingv with the knife a, see Figs. 6, 7 and 8.

The frontfolder plate is shaped as an isosceles trapezoid having its smaller base coincident with the lower edge of the-flange m. Rigidly attached to the shaft 6 (see Fig. 5 is-a lever arm u, said arm extending through the opening f in the box 0, this opening being of sufiicient size to allow a partial revolutionv of the arm on the shaft 0. A link 42 connects the lever arm a with the lever arm 9, such link moving in a recess is of the pendent arm 9.

Rotatably journaled'in the standards a, below and in direct vertical alinement With the axis of the bearing. box 0, is a shaft 2 commonly referred'to asthe slitter lip knife shaft. Atthe' far end of the shaft 0, is a rigidly fixed' lever arm to connecting with a link x. The lower end of this link is made with a slot y in which bears the slitter lip knife shaft 2 and the lowermost end of the link bears a-cam roller- 2. On the far end of theshaft 2is rigidly fixed a cam 3, in the groove of which bears the cam roller 2. The rotation of the shaft 2 will give the link a; a reciprocating motion, thereby throwing the lever to up and down, and giving a similar movement to the lever arm a, thereby actuating the link "0. In this way the die holder 7) will be given a swinging motion about its fulcrum r.

Rotated by the slitter lip knife shaft 2 and moving in the same plane of action as the female die mouth are the slitter knives l and the lip knife t. (See Figs. 6 and 12). The slitter knives holder 5 carrying a cross arm 6, which has one side longer than the other, rigidly fixed on the shaft 2. The slitter knives 4: are adjustably attached to the ends of the cross arm (3 by means of set-screws 8 bearing in slots 7.

The lip knife holder 9 is rigidly fixed on the shaft 2 adjacent the slitter knives holder 5. This holder, however, is set a little ahead of the slitter holder. In this way the lip knife 23 and the slitter knives 4: will not be in alinement, but the former will always be slightly in advance of the latter. That part of the lip knife holder to which the lip knife is attached, projects outwardly (.0 one side as shown in Fig. 9, thereby locating the lip knife midway between the slitter knives and in the same vertical plane as the lip knife holder.

On the shaft 2, is a rigid gear 10 through which motion is transmitted to this shaft. In the standards (4 below the slitter lip knife mechanism is ournaled a driven shaft 11 on which is mounted a gear 10. and a stainper arm 13, carrying an adjustable stamper 13 the head of which is curved.

A shaft 14, is rotatably journaled in the standards a. and carries a paper compression-roll 15 and a spur-gear 16, the latter meshing with the spur-gear 10 on the shaft 11.

The stamper 13 imprints the paper running over the paper con'ipression-roll 15.

In bushings 17 of the standards (1 is journaled the ink-fountain shaft 18, carrying a spur gear 19, which meshes with an intermediate gear 34. An ink-fountain drum 21 which has as an integral part of it a vibrating cam 20, is also rigidly mounted on the shaft 18, (see Fig. 5

Bolted to the base is a cam roll bracket 32, having on its upper end the cam roller 33, hearing in the groove of the vibrating cam 20. Fig. This cam action imparts the vibratingmotion to the ink-fountain shaft and all of its attachments.

A bracket 86, having an inclined slot 3?. in which a freely running composition roll 38 is loosely journaled, is bolted to the base I). This composition roll bears against the ink-fountain drum 21 and is frictionally driven by it. The inclined slot 37 permits a limitedmovement of the composition roll, so

that when-the ink pump valve 26 comes to that part of its revolution where it contacts with the composition roll, the latter will be moved slightly in its slot. Such contact transfers a quantity of ink from the ink pump to the composition roll, and the vibrating motion of the ink fountain causes this ink to be distributed uniformly over the composition roll.

During each revolution of the stamper 13, it contacts once with the composition roll 88, thereby taking the ink from the latter and holding it ready to make an imprint upon the paper. Two paper rolls 39 and 4:0 (see Fig. 1) are loosely ournaled in the lower portions of the standards a. On the upper parts of said standards are mounted brackets %1, in rearmost ends of which is loosely ournaled a freely running paper roll 42. On the lower ends of the standards a, are mounted brackets 43, which support the paste pan holder 4st and its necessary attachments. The paste pan as sets in this holder and a plate 4:6 fastened to the paste pan holder 44: holds the pan in position. A paste bottle as, is held by the uprights 49, in the pan 15 in such way that the level in the pan remains constant. Arms support a loosely running past-wheel, 51 the latter running in the slot 47, (see Fig. of the plate 46, and having its bottom portion continually immersed in the paste.

To the pendent arm g of the bearing box 0. is rigidly attached a former support 52. See Figs. 2, 3, t, 5, and 5. This support has a. horizontal base and an inclined upper face, and its end abutting against the pendent arm 9 is made with a groove to fit the tongue Z; and the parts are connected by screws 55; see Fig.

To the base of the former support 52 and the flanges j, is fastened the lower formerplate 56; (see Figs. 1, 2 and 5). This plate is considerably wider than the former support, as shown in Figs. 3, t, and 5, extends from lowermost edge of the folder plate n through the former section. Openings in this plate are provided for the lip knife and slitter knives respectively. The upper former plate 57 is screwed to the upper face of the former support said plate being also wider than the former support, but toward its receiving end it is tapered as shown at 58, Fig.

Posts 59 spaced at equal distances from the center line of the machine are set upright in the base 7). Cross pieces 60 connect the opposite posts, being rigidly secured to same by the studs 61.

On the cross pieces 60, are secured stringers 62, (see Fig. 2) by bolts 63. These stringers extend longitudinally, converging slightly and support the former wheel. On these stringers, opposite each other, at intervals, lateral slots are provided, in which are adj ustably supported the former wheel posts 65, which provide a bearing upon which the former wheels rotate. The former wheels 66 serve to start the tucks in the paper tubing. The former wheels 67, 68 and 69 are placed on the remaining posts in their order respectively, and form a graduation conforming with the inclination of the upper former plate 57, (see Fi 3, 4 and 5).

The former wheels 67 are shaped somewhat like a grooved pulley having dissimilar flanges. The upper flanges 70 extend out over the upper former plate 57 and the lower flanges 71 extend into the channels formed by the two former plates and their support. See Fig. 3.

The former wheels 68 are somewhat similar in construction to the former wheels 67, the only difference being that the heights and slopes of their flanges are varied so as to conform with the new cross section of the former support and its attached plates. See Fig. 4c-

The former wheels 69 are circular wheels, similar to the wheels 66, and rot-ate in the channel between the upper and lower formerplates in the same manner as the lower flanges of the wheels 67 and 68. Besides making thetucks. and shaping the paper to the tubing form, these wheels serve also as roller bearings for the paper as it is drawn forward to the draw roll sect-ion. These parts heretofore mentioned, with the exception of the shaft by means of which motion is transmitted to the parts of this section, constitute the entire former section.

Two parallel standards 72 are mounted on the base 7), (see 1) and are provided with brackets 73, in which is journaled a guide-roll 74;. Two draw rolls 7 6, 81 in vertical alinement with each other are journaled in the standards 72.

In the standards 72 is also journaled the carrying drive-shaft (not shown). Each extremity of which carries a disk 110, from which disks extend connecting rods 111 to the carriages (not shown) for reciprocating the latter.

On the base I) is a journal post 114 supporting one end of a shaft 119 on which is a gear 120. The journal post is made with a ournal bracket 115, carrying a shaft on which is mounted a gear (not shown) meshing with the gear 120; the latter gear constituting a part of the train transmitting motion from the prime mover-shaft to the various devices of the former section. The motion transmitting devices are arranged as convenient.

I shall now trace the passage of the paper through the former section.

In Fig. 1, the paper sheet a is shown at its initial point running over the paper roll Z) are drawn over the frontfolder platen,

toward each other, while the inner part Z) of the sheet is drawn under the plate it. These edges are pushed toward each other as shown in Figs. 3, 4, and 5, and the tucks in the sides of the tube are made by the former wheels acting in conjunction with the stationary former plates. The starting of this tuck 1s shown at 0 in Fig. 1. -While the tubing is being drawn over the lower former plate, the slitters and lip-knives cut the slit and tongue at pie-determined in tervals'. As the tubing is drawn into the draw roll section, it is first pasted down by the draw rolls, so as to make a finished tube.

I claim: v

'1. In a machine of the character described, the combination with means for feeding forward a continuous strip of material, longitudinally extending flat members located one above the other butspaced apart, and forwardly converging, a series of former elements located at both sides of the upper of said members, and having relative motion with respect to the latter, such former elements having V-shaped portions over-lying both faces of the sides of the up per of said members, and horizontal disks interposed between the forward ends of said members. V

2. In a machine of the character described, the combination with means for feeding forward a continuous strip of ma terial, longitudinally extending-flat members located one above the other but spaced apart, and forwardly converging, aseries of former wheels journaled at both sides of the upper of said members, each of said wheels being made with. l-shaped peripheral groove, the opposite faces of which, in the successive units of the series are brought nearer together, progressively; the grooved portions of said wheels over-lying both faces of the sides of the upper of said members, and rotatable horizontal disks interposed between the forward ends of said members.

3. In a machine of the character described, the combination with means for feeding forward a continuous strip of material, longitudinally extending fiat members located one above the other but spaced apart, and forwardly converging, a series of former wheels ournaled at both sides of the upper of said members, each of said wheels being made with V-shaped peripheral groove, the opposite faces of which, in the successive units of the series are brought nearer together, progressively; the grooved portions of said wheels over-lying both faces of the sides of the upper of said members, the upper portion of said peripheral groove having a conical flare, and projecting beyond the lower portion of said peripheral groove, and horizontal disks interposed between the forward ends of said members.

i. In a machine of the character described, the combination with means for feeding forward a continuous strip of material, longitudinally extending flat members located one above the other but spaced apart, and forwardly converging, the receiving end of the upper of said members bein tapered, a series of former wheels journalec at both sides of the upper of said members, each of said wheels being made with V-shaped peripheral groove, the opposite faces of which, in the successive units of the series are brought nearer together, progressively; the grooved portions of said wheels over-lying both faces of the sides of the upper of said members, the upper portion of said peripheral groove having a conical flare, and projecting beyond the lower portion of said peripheral groove, and horizontal disks interposed between the forward ends of said members.

In a machine of the character described, the combination with means for feeding forward a continuous strip of inate'rial, longitudinally extending fiat members located one above the other but spaced apart, and forwardly converging, and a series of former wheels ournaled at both sides of the upper of said surfaces, each of said wheels being made with V-shaped peripheral groove, the opposite faces of which, in the successive units of the series are brought nearer together, progressively; the grooved portions of said wheels over-lying both faces of the sides of the upper of said menr bers.

6. In a machine of the character described, the combination with means for feeding forward a continuous strip of ma terial, longitudinally extending fiat members located one above the other but spaced apart, and forwardly converging, a series of former wheels journaled at both sides of the upper of said surfaces, each of said wheels being made with V-shaped periph eral groove, the opposite faces of which, in the successive units of the series are brought nearer together, progressively; the grooved portions of said wheels over-lying both faces of the sides of the upper of said members, and the upper portion of said peripheral groove having a conical flare, and projecting beyond the lower portion of said peripheral groove.

7. In the machine of the character described, in combination with means for feeding forward a continuous strip of material, a former element comprising longitudinally extending upper and lower members, spaced apart, and forwardly converging, and other former elements located on both sides of said longitudinal members having relative motion with respect to the latter, and being provided with grooved portions overlying the edges of the upper of said longitudinal members.

8. In the machine of the character described, in combination with means for feeding forward a continuous strip of material, a former element comprising longitudinally extending upper and lower members spaced apart, and forwardly converging, means for guiding said strip to, and bringing the side portions thereof over the sides of the former element, and other former elements located on both sides of said longitudinal members, having relative motion with respect to the latter, and being provided with grooved portions overlying the edges of the upper of said longitudinal members.

JAMES DUVALL. 

